Body Control Module (BCM), C3 Connector End View

Courtesy of GENERAL MOTORS CORP.
Connector Part Information		12110244 24-Way F Micro-Pack 100 Series (PNK)
Pin	Wire Color	Circuit No.	Function
A1	-	-	Not Used
A2	YEL	356	Driver Door Lock Relay Unlock Control
A3	-	-	Not Used
A4	ORN	192	Front Fog Lamp Switch Signal
A5	BRN/WHT	1571	Traction Control Switch Signal
A6	BLK/WHT	99	Windshield Washer Fluid Level Signal
A7	-	-	Not Used
A8	LT BLU	195	Door Lock Control
A9	-	-	Not Used
A10	BLK/WHT	151	Ground
A11	WHT	156	Courtesy Lamp Low Control
A12	ORN	340	Battery Positive Voltage
B1	ORN	1540	Battery Positive Voltage
B2	PPL	1807	Class 2 Serial Data
B3	WHT	194	Door Unlock Control
B4	WHT	1459	Security System Sensor Supply Voltage
B5	-	-	Not Used
B6	YEL/BLK	68	Low Coolant Level Indicator Control
B7	LT GRN	66	A/C Request Signal
B8	-	-	Not Used
B9	PNK	849	Brake Fluid Level Sensor Signal
B10-B12	-	-	Not Used